Abstract
Protein malnutrition is a major cause of morbidity and mortality in developing countries where the cost and availability of animal protein remain prohibitive. Grain amaranth (Amaranthus caudatus L) has the potential to substitute expensive animal protein. Its production and consumption is however low in Kenya. Nitrogen is a key limiting element in grain amaranth production. This study investigated the effects of different rates of inorganic nitrogen and cattle manure on the growth and yield of grain amaranth over a period of two years. Inorganic fertilizer at the rate of 100 kg N/ha significantly delayed flowering. Grain yield showed a linear response to inorganic and organic N application. Regression analysis projected the optimum inorganic fertilizer and manure application rates of 87.5 kg N/ha and 9 t/ha respectively with yield of 1.84 t/ha. The highest profitability was achieved at the optimum manure and fertilizer rates. The projected manure and inorganic fertilize rates may however not be affordable by the small-scale farmers. Thus a follow-up study to test the combined effect of inorganic and organic fertilizers is recommended.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
Inorganic fertilizer at 100 kg N/ha significantly delayed flowering of grain amaranth.
- Taxon
- Grain amaranth (Amaranthus caudatus L)
Amaranthus hypochondriacuse0 - Treatment
- Inorganic fertilizer at the rate of 100 kg N/hae1
- Outcome
- floweringe1
- Direction
- delayede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain amaranth (Amaranthus caudatus L)”
e1“Inorganic fertilizer at the rate of 100 kg N/ha significantly delayed flowering”
Claim · model-written summary
Grain yield of grain amaranth showed a linear response to inorganic and organic N application.
- Taxon
- Grain amaranth (Amaranthus caudatus L)Amaranthus hypochondriacuse0
- Treatment
- inorganic and organic N applicatione2
- Outcome
- Grain yielde2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain amaranth (Amaranthus caudatus L)”
e2“Grain yield showed a linear response to inorganic and organic N application”
Claim · model-written summary
Regression projected optimal inorganic fertilizer and manure rates of 87.5 kg N/ha and 9 t/ha, with a yield of 1.84 t/ha.
- Taxon
- Grain amaranth (Amaranthus caudatus L)Amaranthus hypochondriacuse0
- Treatment
- optimum inorganic fertilizer and manure application rates of 87.5 kg N/ha and 9 t/hae3
- Outcome
- yielde3
- Value
- 1.84 t/hae3
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain amaranth (Amaranthus caudatus L)”
e3“optimum inorganic fertilizer and manure application rates of 87.5 kg N/ha and 9 t/ha respectively with yield of 1.84 t/ha”
Claim · model-written summary
Profitability of grain amaranth was highest at the optimum manure and fertilizer rates.
- Taxon
- Grain amaranth (Amaranthus caudatus L)Amaranthus hypochondriacuse0
- Treatment
- optimum manure and fertilizer ratese4
- Outcome
- profitabilitye4
- Direction
- higheste4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain amaranth (Amaranthus caudatus L)”
e4“The highest profitability was achieved at the optimum manure and fertilizer rates”
Claim · model-written summary
A follow-up study should test the combined effect of inorganic and organic fertilizers on grain amaranth.
- Taxon
- Grain amaranth (Amaranthus caudatus L)Amaranthus hypochondriacuse0
- Outcome
- combined effect of inorganic and organic fertilizerse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain amaranth (Amaranthus caudatus L)”
e5“a follow-up study to test the combined effect of inorganic and organic fertilizers is recommended”
The same questions in other papers
fertilization · yield · Amaranthus hypochondriacus (grain amaranth)Results agree
16 papers in the same direction as this paper
- positive
- positive
- positive
13 papers more in this group
See all 17 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.